16958906287 has 4 divisors (see below), whose sum is σ = 17072724600. Its totient is φ = 16845087976.

The previous prime is 16958906281. The next prime is 16958906297. The reversal of 16958906287 is 78260985961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78260985961 = 113 ⋅692575097.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16958906287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16958906281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56908933 + ... + 56909230.

It is an arithmetic number, because the mean of its divisors is an integer number (4268181150).

Almost surely, 2^16958906287 is an apocalyptic number.

16958906287 is a deficient number, since it is larger than the sum of its proper divisors (113818313).

16958906287 is a wasteful number, since it uses less digits than its factorization.

16958906287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113818312.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 16958906287 in words is "sixteen billion, nine hundred fifty-eight million, nine hundred six thousand, two hundred eighty-seven".